After looking into http://software.opensuse.org/package/openmpi and searching through the unsupported repos, the closest "reliable" source I could find was from the devel section of openSUSE. The proposed changes are to the following instructions:

Perhaps a bug was found back then. But all I know is that the last google cache reference I can find about 1.3.2 being on the science repos dates back to 26th of February of this year, so it doesn't look like it was removed very long ago...

If I remember correctly I picked 1.3.2 since that was run-time compatible with 1.4 series so I could just run across machines those two versions. This isn't the case for 1.2.8 and I never investigated why exactly.

Tested 2 tutorials, which both worked successfully with 4 cores on a VM with openSUSE x86_64 11.4:
* incompressible/simpleFoam/turbineSiting
* combustion/fireFoam/les/smallPoolFire3D

edit: Interesting... I tried on openSUSE 12.1 x86_64 (also on a VM with 4 cores) with the exact same Open-MPI 1.4.5 from 11.4 devel and OpenFOAM 2.1.0 RPMS for 11.4 as well and those two tutorials also worked!!